Air conditioning makes homes, offices, cars, hospitals, and shopping centers more comfortable. But at the same time may leave your eyes with a sensation of dryness or discomfort for a few hours. That which we see in the relationship between AC and Dry Eyes is mainly due to low humidity, constant air flow, and quick tear evaporation.
Our eyes require a stable tear film for comfort and clear vision. In dry indoor air tears may evaporate at an accelerated rate. This in turn can cause eye irritation and may aggravate present Dry Eye Syndrome. By learning of the connection between AC and Dry Eyes we can protect our eyes without having to do away with air conditioning.
Why Does Air Conditioning Make Your Eyes Dry?
Air conditioners lower the temperature of the room at the same time they reduce indoor Air. As humidity goes down, moisture which is present on the eye’s surface evaporates at a faster rate which in turn disrupts the natural tear film. The National Eye Institute reports that dry and windy settings speed up tear evaporation. Also they say to stay away from air conditioning when dry eye symptoms present.
This is why we see the development of AC and Dry Eyes issues after a few hours in that air conditioned office. People may also notice a burn or a gritty sensation, tired eyes, or mild eye irritation. In those that have Dry Eye Syndrome we notice a stronger presentation of symptoms.
| Air-Conditioned Environment | Possible Effect on the Eyes |
| Low humidity | Faster tear evaporation |
| Direct AC airflow | Increased dryness and discomfort |
| Long screen hours | Reduced blinking |
| Prolonged AC exposure | Greater chance of Eye Irritation |
| Dry Indoor Air | May worsen Dry Eye Syndrome |
How Does AC Affect the Tear Film?
The tear film which is a thin protective layer over the eye’s front surface. It lubricates the eye and helps maintain a smooth optical surface. When this layer does not behave as it should the eyes may begin to feel dry. In the case of AC and Dry Eyes the issue is usually that of excessive evaporation instead of the air conditioner which is a cause in itself. We also note that low humidity environments play a role in increased tear evaporation and greater dry eye symptoms.
Continuous air flow will aggravate the issue. At the foot of an AC unit or in the direct path of air flow you will experience increased evaporation. This combo of dry indoor air with moving air may bring on eye irritation which may persist during long work shifts.
Common Signs of AC-Related Dry Eyes
The presentation of AC and Dry Eyes symptoms varies from person to person. You may see dryness, burning, a gritty feeling, redness, tired eyes, or temporary blurred vision. Some people also report watery eyes. This may go against what you would expect but in some cases irritation causes a reflex which produces extra tears. These watery tears may in fact be inadequate in terms of providing the eye with the lubrication it requires.
People with Dry Eye Syndrome may note that their symptoms flight in offices, cars, or at home in which AC is used. By all means do not jump to the conclusion that persistent eye irritation is caused by the AC. Other eye conditions may present with the same symptoms.
Who Is More Likely to Experience Dry Eyes in AC?
Sure, here is the paraphrized version of that passage: In many cases AC and Dry Eyes are reported by many, but some people may be more prone. We see that long screen use is an issue because we tend to blink less when we are into digital devices. The National Eye Institute also reports that prolonged screen time is a cause of dry eye.
Contact wearers and people which already have Dry Eye Syndrome may also see symptoms earlier. Age, certain drugs, and some health conditions play a role in tear production also. That which is seen with screen use, low humidity indoor air, and direct air from AC can thus create an uncomfortable setting for the eyes.
How Can You Prevent Dry Eyes While Using AC?
You do not necessarily need to stop using air conditioning. Small changes can often reduce the effects of AC and Dry Eyes.
Try to stay away from sitting right in front of an AC vent. For less directed air at your face try which in turn may reduce evaporation. Also take frequent screen breaks and be conscious to blink which in turn can help maintain the tear film. A humidifier may be used when indoor air is very dry. The National Eye Institute reports to use a humidifier to prevent indoor environments from drying out.
| Helpful Change | Why It May Help |
| Redirect AC vents | Reduces direct airflow over the eyes |
| Take regular screen breaks | Encourages normal blinking |
| Blink consciously | Helps spread tears across the eye |
| Use a humidifier | Adds moisture to dry Indoor Air |
| Seek an eye examination | Helps identify persistent Dry Eye Syndrome |
Lubricating eye drops may help out some folks, but the appropriate treatment will depend on the cause and the degree of symptoms. If Eye Irritation persists after making changes to the environment then an eye exam is a good idea.
When Should You See an Eye Doctor?
Occasionally AC and Dry Eyes issues may improve once out of the air conditioned setting. But if you have frequent or persistent symptoms that is a cause for concern. See an eye specialist if dryness persists, affects your daily routine, or causes repeated blurred vision. Also get in to see a doctor if you have significant redness, pain, light sensitivity, discharge, or sudden changes in vision.
An ophthalmologist is able to determine that the issue is primarily with the AC and Dry Eyes or a base type of Dry Eye Syndrome. We may then treat the root cause instead of just the symptoms.
Conclusion
The relationship between AC and Dry Eyes is a large issue in low humidity that also includes direct airflow and reduced blinking. In modern offices these issues come out more so because we find that people sit in front of screens in climate controlled Indoor Air.
Simple steps like directing the flow of air away from the eyes, frequent blink breaks, taking vision holidays, and keeping the environment’s humidity at a good level may reduce Eye Irritation. But if the issue persists, don’t ignore it. If you still have issues with AC and Dry Eyes after making these changes, a visit to ASG Eye Hospital for an exam can help us to determine if you have Dry Eye Syndrome or some other eye issue which requires treatment.
Frequently Asked Questions
1. Can air conditioning really cause dry eyes?
Air cons can play a role in AC and Dry Eyes issues which they do by reducing humidity and creating air flow. Both of these factors cause an increase in tear evaporation which in turn leads to Eye Irritation
2. Can sleeping with AC cause dry eyes?
Yes some folks report AC and Dry Eye issues after which they sleep in an a/c environment. Also direct air flow at the face and very dry indoor air may cause night time discomfort
3. Does AC make Dry Eye Syndrome worse?
It can. People with existing Dry Eye Syndrome may be more sensitive to low humidity and continuous airflow.
4. Can a humidifier help with AC-related dry eyes?
A humidifier puts moisture into the indoor air which in turn may reduce dryness of the environment. It should be cleaned as per the manufacturer’s instructions.
5. Why do my eyes burn in an air-conditioned office?
Dry indoor air, direct air flow, and reduced blinking during computer use may cause Eye Irritation. If you have continuous burning in your eyes you should see an ophthalmologist.
6. Should I use eye drops every time my eyes feel dry in AC?
Not always. Occasional use of lubricating drops may help but recurrent AC and Dry Eye issues have many causes. An ophthalmologist can recommend appropriate treatment which may in particular include for instance when Dry Eye Syndrome is present
